Lewis A J
Aust Dent J. 1977 Dec;22(6):455-7. doi: 10.1111/j.1834-7819.1977.tb05150.x.
Four series of standard tensile specimens were produced by casting into moulds composed of silica bonded, gypsum bonded, and phosphate bonded refractories. Two nickel base alloys were employed, one a standard dental casting alloy and the other a specially formulated ductile material. Subsequently, all specimens were subjected to mechanical testing, and radiographic and metallographic evaluation, in conjunction with porosity determinations, in order to ascertain how the nature of the refractory investment influences the structural quality of the castings produced.
通过浇铸到由硅石粘结、石膏粘结和磷酸盐粘结耐火材料制成的模具中，制备了四组标准拉伸试样。使用了两种镍基合金，一种是标准牙科铸造合金，另一种是特别配制的韧性材料。随后，对所有试样进行了力学测试、射线照相和金相评估，并结合孔隙率测定，以确定耐火包埋材料的性质如何影响所生产铸件的结构质量。
